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首页> 外文期刊>Journal of nano research >Surfactant-Assisted Synthesis of Birnessite-Type MnO_2 Nanoflowers
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Surfactant-Assisted Synthesis of Birnessite-Type MnO_2 Nanoflowers

机译：表面活性剂辅助合成水钠锰矿型MnO_2纳米花

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摘要

Flower-like birnessite-type MnOsub2/sub (Bir-MnOsub2/sub) was synthesized through decomposition of KMnOsub4/sub under acid condition at 90 °C in open system. The addition of surfactant was a key factor for synthesis of Bir-MnOsub2/sub at low temperature and ambient pressure. Crystal nucleus obtained via reaction between surfactant and KMnOsub4/sub can catalyze decomposition of KMnOsub4/sub, which led to the higher velocity of reaction. Reducibility of surfactant additional had an impact on yield and size of sample obtained. As-prepared sample with highest yield and smallest size was synthesized by using SOA as surfactant. Long reaction time and high reaction temperature were propitious to the growth of sample. The as-prepared samples were used to degrade rhodamine B (RhB), and the efficiency was different as the size of nanoflowers changed.
机译：在90℃于酸性条件下，于90℃于酸性条件下，通过分解KMnO 4 来合成花状的水钠锰矿型MnO 2 （Bir-MnO 2 ）。开放系统。表面活性剂的添加是在低温，常压下合成Bir-MnO 2 的关键因素。表面活性剂与KMnO 4 之间的反应获得的晶核可催化KMnO 4 的分解，从而导致更高的反应速度。表面活性剂另外的还原性对获得的样品的产率和尺寸有影响。以SOA为表面活性剂，合成了产率最高，尺寸最小的样品。反应时间长和反应温度高有利于样品的生长。所制备的样品用于降解若丹明B（RhB），效率随着纳米花大小的变化而不同。

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